Ponderings on Fusion Memory . . . . .

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Ponderings on Fusion Memory . . . . .

Unread post by parametric » Mon Apr 22, 2013 5:42 am

From New, The Fusion came with 64Mb for EACH of its two TI Coldfire Processors.

Expansion was available via E3 Chips, each of 128Mb, giving a fully expanded Fusion a total of 384Mb.
P1010056.JPG
Alesis E3 chip
This is obviously very useful in a number of ways:

By careful preselection of Programs, you can have most if not all of what you need, in memory - for performance use . . . .

It most likely also improves functionality if using the sequencer (In Song Mode) with higher track counts.

As the old adage states - You can never have too much Ram - it set me to thinking what the Fusion's limits might be in this respect?

Can the Processors address MORE than a 128Mb expansion

Can the operating system similarly deal with more?

If so, how much?

It would be quite a WOW factor if it could go to 1024Mb for each processor

I don't understand enough about these matters to know what might be possible . . .

Given Brian's incredible work with the Yamaha modules he has produced - might this be a future possiblility?

Any comments, Brian?

Aside from the above questions, it might be a downside that the E3 Modules are still current - i.e. commercially manufactured. (copyright issues and treading on other peoples corns etc)

They don't wear an Alesis hat now, but rather an Akai one, (EXM E3) and are slightly more expensive as a result . (Sometimes as much as £150 each - excepting the example I gave elsewhere in this section)

They are the same chip though and the Akai-boxed ones fit the Fusion as well as the MPC5000 . . . .

What's the concensus?

Best Regards

parametric


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Re: Ponderings on Fusion Memory . . . . .

Unread post by Miks » Mon Apr 22, 2013 8:36 am

To me it seems as if Brian might found his own company in the near future... :mrgreen:


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Re: Ponderings on Fusion Memory . . . . .

Unread post by tux » Mon Apr 22, 2013 12:23 pm

parametric wrote:Aside from the above questions, it might be a downside that the E3 Modules are still current - i.e. commercially manufactured. (copyright issues and treading on other peoples corns etc)
I think if the modules don't use any proprietary chips or firmware then making and selling compatible modules is perfectly legal. I mean that's after all how IBM compatible PCs started out.


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Re: Ponderings on Fusion Memory . . . . .

Unread post by parametric » Tue Apr 23, 2013 12:15 am

The E3 Modules don't look very complicated . . . . They look simpler than the ones Brian has been working on.

This is the view of the one thats easy to see when you open the Fusion . . .
E3 Closeup.JPG
Best Regards

parametric


Alesis Fusion 8SSD AND 6SSD - BOTH are 384Mb/120Gb SSD/Akai ADVANCE61/Yamaha MOXF6/1024Mb Flash Ram/Yamaha SY85/8.5mb vol/1024k non-vol/DX21/Roland MT32/Bachmann double overstrung Baby Grand Piano/Win10 Pro/Ubuntu MATE 15.0.4/iBook G4/Mac OS 10.4.6/ProTools 7.4/MBox2/M-Audio 24/96 Sector101 2x SYEMB06 / 4 x EXM-E3 128MB DRAM Module
BRAND NEW DSDD (720k) FLOPPY DISKS FOR SALE - viewtopic.php?f=22&t=9217

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Re: Ponderings on Fusion Memory . . . . .

Unread post by shadowmask » Tue Apr 23, 2013 9:02 am

parametric wrote:Can the Processors address MORE than a 128Mb expansion
Can the operating system similarly deal with more? If so, how much?
To quote the commercial "Only smarties have the answer" but really - only Alesis has the answer here :)

Brian


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Re: Ponderings on Fusion Memory . . . . .

Unread post by JMS » Mon Sep 22, 2014 9:30 pm

shadowmask wrote:
parametric wrote:Can the Processors address MORE than a 128Mb expansion
Can the operating system similarly deal with more? If so, how much?
To quote the commercial "Only smarties have the answer" but really - only Alesis has the answer here :)

Brian
And They are not talking :(


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Re: Ponderings on Fusion Memory . . . . .

Unread post by shadowmask » Tue Sep 23, 2014 8:20 am

There is be a slim chance that the Fusion can address and use more memory. Is there a service manual around?

Are these expansions still desirable? I may be able to knock them out for £50-ish if the market was there.

Brian


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Re: Ponderings on Fusion Memory . . . . .

Unread post by JMS » Wed Sep 24, 2014 5:35 am

shadowmask wrote:There is be a slim chance that the Fusion can address and use more memory. Is there a service manual around?

Are these expansions still desirable? I may be able to knock them out for £50-ish if the market was there.

Brian
The market is probably there not only for the Fusion, but the MPC5000 that Akai has replaced with more modern sampling gear

No MPC5000 here http://www.akaipro.com/category/mpc-series

The MPC5000 is a legacy product http://www.akaipro.com/category/legacy-products

Which means E3 memory modules and the PSU for Alesis Fusion & Akai MPC5000 will become scarce :(


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Re: Ponderings on Fusion Memory . . . . .

Unread post by shadowmask » Wed Oct 22, 2014 7:55 am

Having poked around recently with an E3 expansion I can say that all the connections on the module PCB are used so 128MB is the largest size that can be addressed through the motherboard connectors.

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Re: Ponderings on Fusion Memory . . . . .

Unread post by shadowmask » Mon Aug 03, 2015 8:31 am

Having poked around recently with an E3 expansion I can say that all the connections on the module PCB are used so 128MB is the largest size that can be addressed through the motherboard connectors.
This is actually wrong, I had SRAM in mind. The Fusion could see more memory if it is programmed to look for it. Anyways, here's the first 128MB versions..

Image

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Re: Ponderings on Fusion Memory . . . . .

Unread post by Saul » Mon Aug 03, 2015 8:59 am

Nice job Brian. Never ceases to amaze me the things you come up with :)


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Re: Ponderings on Fusion Memory . . . . .

Unread post by Miks » Mon Aug 03, 2015 9:42 am

Indeed a nice job Brian - looking extremly professional - as usual! (Y) ((i))


My (key related) gear (in alphabetical order):
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500, TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade


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Re: Ponderings on Fusion Memory . . . . .

Unread post by EXer » Mon Aug 03, 2015 3:40 pm

shadowmask wrote:Anyways, here's the first 128MB versions..

Image

Brian
That's good news Image


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Re: Ponderings on Fusion Memory . . . . .

Unread post by shadowmask » Wed Aug 12, 2015 8:05 pm

The 128MB & 256MB boards have been installed, diagnostics run, and results given.

First Things First: The Fusion DID NOT see the extra 128MB on the 256MB modules. Both the 128MB and 256MB modules were reported as 128MB.

Many thanks to Chris "parametric" for taking the time to perform the tests on his Fusion :)

Brian


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Re: Ponderings on Fusion Memory . . . . .

Unread post by shadowmask » Tue Sep 01, 2015 9:19 pm

These are now available here.

Originally the Alesis EXM-E3 design was smaller (first photo in this thread). Later on they made the PCB longer at one end for some reason. Now looking at it I guess that was done to try to prevent users from installing the PCB the wrong way around as the extra piece of PCB may catch on something in the unit(s) forcing the user to "think twice" during the installation.


Brian


GEAR: SY85 / TG-500 / TG-300 / MOXF6 / FG410 / Supernova II
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